Global Cooling and Enhanced Eocene Asian Mid-latitude Interior Aridity

Overview

Journal Nat Commun

Specialty Biology

Date 2018 Aug 4

PMID 30072688

Citations 6

Authors

J X Li

L P Yue

A P Roberts

A M Hirt

F Pan

Lin Guo

Y Xu

R G Xi

Lei Guo

X K Qiang

C C Gai

Z X Jiang

Z M Sun

Q S Liu

Affiliations

Soon will be listed here.

Abstract

Tibetan Plateau uplift has been suggested as the main driving force for mid-latitude Asian inland aridity (AIA) and for deposition of thick aeolian sequences in northern China since the Miocene. However, the relationship between earlier AIA and Tibetan Plateau mountain building is uncertain because of a lack of corresponding thick aeolian sequences with accurate age constraints. We here present results for a continuous aeolian sequence that spans the interval from >51 to 39 Ma from the eastern Xorkol Basin, Altun Shan, northeastern Tibetan Plateau. The basal age of the studied sequence postdates initial uplift of the Tibetan Plateau by several million years. Our results indicate that the local palaeoclimate was teleconnected strongly to the overall global cooling pattern, so that local enhanced aridification recorded by the studied aeolian sequence is dominantly a response to global climatic forcing rather than plateau uplift.

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